Name that pattern

Interviews are won on recognition, not recall. Drill the signal → pattern jump until it is automatic.

Patterns
21
7 families
Quiz items
17
4 traps
Due today
—
reading local progress
Traps mastered
—/4
box 4+

Flashcards

A signal on the front, the pattern on the back. Say the answer out loud before you flip.

Start review

Name That Pattern quiz

Multiple choice with 4 deliberate traps — the constraint in the prompt is what picks the pattern.

Start quiz

Worked examples

20 problems solved side by side in TypeScript and Ruby, each on its pattern page.

Browse patternsCheatsheet

Progress is stored in this browser only, under dsa-drills:progress:v1.